Steel sheet assembly, method of manufacturing steel sheet assembly, and spot welding process

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United States of America

PATENT NO 12208462
APP PUB NO 20210260685A1
SERIAL NO

17319134

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Abstract

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A welding process used in a method of manufacturing a steel sheet assembly includes spot welding steel sheets performed for a heat time of 0.08 seconds or more using a convex electrode with a tip radius of curvature of 20 mm or more or a flat electrode such that the weld force F (kN) for initial 0.03 seconds of the heat time satisfies formula: F<0.00125×(1+0.75×tall)+3 where TS (MPa) denotes an average strength of the steel sheets and represents a weighted mean value of a thickness of each of the steel sheets, and tall (mm) denotes a total thickness of the steel sheets (the sum of the thicknesses of the steel sheets).

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Patent Owner(s)

Patent OwnerAddress
JFE STEEL CORPORATIONTOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ikeda, Rinsei Tokyo, JP 51 219
Matsuda, Hiroshi Tokyo, JP 474 5592
Matsushita, Muneo Tokyo, JP 26 62
Oi, Kenji Tokyo, JP 24 165
Okita, Yasuaki Tokyo, JP 25 127

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